EP 0276786 A3 19900207 - POLYCHROMATIC MONITOR FOR CONNECTION TO ELECTRIC APPARATA, IN PARTICULAR OF NUMERIC TYPE
Title (en)
POLYCHROMATIC MONITOR FOR CONNECTION TO ELECTRIC APPARATA, IN PARTICULAR OF NUMERIC TYPE
Publication
Application
Priority
IT 1921787 A 19870130
Abstract (en)
[origin: EP0276786A2] A polychromatic monitor for connection to electric apparata, in particular of the numeric type, for the visualization of color images and/or texts supplied at the input in form of electric signals, is described. The monitor according to the invention comprises a cathode-ray tube for generating a single electron beam at different energy levels and a screen having at least one layer of electroluminescent material to be excited in a differentiated manner by the electron beam for the emission of polychromatic light comprising at least two base colors. According to the invention a circuit is provided for controlling the cathode-ray tube receiving in input the electric signals and controlling the cathode-ray tube so as to cause the generation of the electron beam sequentially at the different energy levels related to the various base colors and the emission in sequence of said base colors.
IPC 1-7
IPC 8 full level
H04N 9/27 (2006.01)
CPC (source: EP)
B82Y 10/00 (2013.01); H04N 9/27 (2013.01)
Citation (search report)
- [X] EP 0083398 A2 19830713 - IBM [US]
- [X] US 3413410 A 19681126 - FARMER ZANE M
- [A] GB 2134759 A 19840815 - SECR DEFENCE
- [A] US 3735194 A 19730522 - HUMPHREYS M
- [A] MARCONI REVIEW, vol. 41, no. 208, 1978, pages 21-28; A.R. BEASLEY: "A frame-sequentially switched E.H.T. power supply for a two colour C.R.T. display"
- [A] ELECTRONIQUE ET MICROELECTRONIQUE IND., no. 157, 15th May 1972, pages 35-38; H. BERARD: "La visualisation graphique en couleur"
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0276786 A2 19880803; EP 0276786 A3 19900207; IT 1202455 B 19890209; IT 8719217 A0 19870130
DOCDB simple family (application)
EP 88100992 A 19880123; IT 1921787 A 19870130